Continental drift and convection currents Flashcards
Know what the theories were
1
Q
Who came up with the theory of continental drift?
A
Alfred Wegener
2
Q
Wegener thought that the continents were stuck together in a super continent called…
A
Pangea
3
Q
Where were fossils of tropical plants found?
A
In Antarctica
4
Q
When did Pangea exist?
A
240 million years ago
5
Q
How do the continents move?
A
The tectonic plates sit on are pushed and pulled by magma
6
Q
What happens when two convection currents are sinking?
A
They pull the tectonic plates together.
7
Q
What are convection currents?
A
Magma in the mantle that rises (due to the heat of the cores) and then pulls and pushes tectonic plates
